Railway brake



Dec. 25 1923. 1,478,881

- B. AMENDOLA RAILWAY BRAKE Filed Nov. 15. 1921 3 Sheets-Sheet 1 i 2 IN VENTOR 5" mlmevflwendak AFTTORNE YS Dec. 25 1923.

B. AMENDOLA RAILWAY BRAKE Filed Nov. 15 1921 28 FL 8 --20 o 0 20-2 3 Sheets-Sheet 2 13,14. -JNVENTOR fiarrbimeo floral/Ma.

A14 WW A TTORNE YS Dec. 25,1923. 1,478,881

B. AMENDOLA RAILWAY BRAKE.

Filed Nov. 15. 1921 3 Sheets-Sheet 3 6:0 e a Q 20 lg lg 27 Z6 IN VEN TOR ,Bawokaea zfirzenakiz ATTORNEYS Patented Dec. 25, 1923.

UNITED STATES BARTOLOMEO AMENDOLA, OF SAN FRANGISM, LCAHFQWIL.

R LW BRAKE- Application me.1 1 11o.v .1 br 15, 1921.

To (ZZZ whom it may concern:

Be it known that I, BAnToLoMEo AIYEN- DOLA, a citizen of Italy, residing at San Francisco, in the county of San Francisco, State of California, have invented a new and useful Railway Brake, of which the following is a specification in such full and clear terms as. will enable those skilled in the art to construct and use the same.

This invention relates to a mechanical brake for railway trains and cars and is intended to act directly upon the .car axle to check the speed of .the train or to completely sto the train whenever necessary.

ther objects of the invention will appear as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied to the same portion throughout, but I am aware that there may be modifications thereof.

Fig. 1 is a plan View of the complete apparatus, showmg it as it appears when the train is running.

Fig. 2 is a plan view of the complete apparatus showing it in operation with the axle most fully acted upon by the brake.

Fig. 3 is a vertical sectional View of the casing supporting one of the brake pins.

Fig. 4 is a plan View of one of the supporting plates carrying the brake pins.

Fig. 5 is a longitudinal sectional view of the plate shown in Figure 4.

Fig. 6 is a transverse sectional view of the plate shown in Figure 51;.

Figure 7 is an end vicwof the plate shown in Figure 4.

Fig. 8 is a side elevation of the complete apparatus showing the means for operating it, the brake being released from the car axle.

Fig. 9 is a side elevation of the complete apparatus showing the brake applied to its fullest extent.

Fig. 10 is a front elevation of the casing carrying one of the brake pins.

Fig. 11 is a view inelevation ofthe casing carrying one of the brake pins, looking in the opposite direction from Figure 10.

Fig. 12 is a plan .view of the levers for applying the brake.

Fig. 13 is a View in side elevation of the casing which carries the brake point.

Fig. 14 is an end view of the casing carrying the brake point.

6., s d box being Serial No. 515,281.

Fig. 15 is a side eleva ion of the W e l upon which h br ke dire y a ts- Fig- L6 is a transve se ectional i w o the w ee .upo wh ch th brake point an s.

Fig. 17 represe ts a side e evat on of ne form o le ers fo ope ating o eo th br ke shoes.

Fig. 18 is a side elevation of one of the sp al springs for holdi g one of the brak shoes in the in rmediate po tion, and

Fig. ,19 is a side elevation of a portion of t e am carrying he brake appara us a jacent the car axle.

In the fig re on y the e tra portion of the car axle is shown the car truck is mp e e y omit d, he t unk orming no pa o e p sent invent onhis inv nti n is in ta le in a me w ich is upported from t e car truck i any suitable manner, and consists of four f ame mem e s conn c e t ge he by fo r the rods t one a d, an by two t e rod a the th r and Two pla e 1.9 o ne t he frame membe s 19 together a one end, .while two plates 19 connect the me memb rs 9 a th ot er ndn a di to th o eg ing ram here is an additional frame consisting ejf four ng tudinal y extending members Th e fra e members 27 a e nnnen e'cltog thcr at the end by transverse y xtendng fra e membe s 27, .2 2 an at n en t y ca y a g 3; th iontr which th stay ods 6 p s Fo r ve ca p ates 2. sann t h ide members .27 .asfi i nstrntei in Figures 8, 9 and 19.

T e an axl s ind ca ed at 13 an it has Pai of boxes 1. c amped the e n by mean of the bolts 1,7. Between these two boxes there is the cog wheel 14 which is sccuredto the axle by means of the k ys 18- The asing ca ying th ibreke po nt 7 is upport from h aiitnsfi, 'Qf h hther are u at th t p d. bot om o the e angu a casing 1. This casing is Slotted a the fron to .prmi th aknp n 11' hoe? to project herethrengh, and it is slnttetla the sides as indicated at 3 to permit the arm o t e br ke sh emo t ng plat to project therethrough. i

The brake ,shoeconsi ts f a point d Tho y of metal som wha like a heavy g ar eeth, which is connected to the rectangular box idab enpnn a. 11 ytbish the asing he ent nextend m l gular box -6 (see Figs. 3 and 13) has cheek piecesfti" to: give it added strength and to form the top and bottom of the pocket of the shank 7' of the brake shoe 7. The brake shoe 7 has the. supporting plates 7, 7 connected thereto which embrace the pin 3, and it is secured to the casing 6 by the pins 10, said shoe 7 extending through the opening 11.

At top and bottom the casing 1 is closed by means of the flanged plates 4 through which the pin 3 passes. At the back of the casing 1 there is a flanged plate 5 filling the opening into said casing, and there is a door 25 which may be opened when it is desired to remove the box 6 forrenewing one of the brake shoes.

A cross bar 34 is connected to the two stay rods 35, and it has two lugs 33 projectin therefrom whichfpass over a pivoted ro 26. The rod 26 is pivoted at 26 on a late 26" secured to the cross bar 27 he rod 26 is curved andat its upper edge engages a slotted head 30" of apiston rod 30 which is operated by means of a suitable piston within the air cylinder 29. The

rod 30 is also-connected to a lever '31 pivoted at 31 which extends to the rod 39 for the operationof another brake on'another truck.

The brake casing 1 is bolted to the plates 19 and ismovable with the frame as arunit the front andback ofthe casing 1 being enclosedbyjthe plates 5, one of which is slotted to permit'thebrakeshoei' to extend therethrough, and'have extensions 23 with ears 24 at the opposite ends thereof which are connected together by means of the bolts 22. 1

Heavy spiral springs 20 connect the ends 5 of the plates for holding the brake shoe in the centralposition, and since the plates 5' can only move away from each other on account of the limitation of the slots in which they move notice Fig. 8-any movement up or down of thebrake shoe 7 will be resisted by said springs The plates for holding the brake points in the central position have shoulders 5 there on to prevent them from moving longitudinally out of the slots 3' in the casing 1.

Another rectangular casing 2 oppositely placed with respect to the casing 1, is supported by fourarms' 9 pivotally mounted on the stay rods'36, The casing has four projecting ears 8' "which are connected to slots in theends of the bars 9, and the opposite ends of the barsare slidably connected with the frame members 19" by means of bolts 9 which pass through slots in thebars 9. V ,The casing 2 is substantially identical with the casing 1 except that its supporting ears extend at right fangles to the supporting cars which 'car ryfthe casing 1, and it has the same kind of a projecting brake shoe supported exactly the same as the brake shoe in the casing 1.

In operation when it is desired to stop the Vehicle, the brake shoes are projected toward the pinion 14 by advancing the piston rod 30. The lever 26, will be then advanced from the position shown in Fig. 8 to the position shown in Fig. 9. This will push the frame members carryin the two casings to the position illustrated in Figure 9, and dependent upon the extent to which the frame is pushed forward will give a light or heavy braking effect. The fixed rods 16 act as a fulcrum for the levers 9 and cause the casing 2 to be advanced toward the axle at the same time the casing 1 is advanced on the other side. If the brake shoes 7 are just slightly engaged with the pinion, the s rings 20 will permit the brake shoes to be epressed and raised sufiiciently to permit the wheels to rotate with rapid retarding shocks iven to the axle. If the frame is advance to its fullest position it will project the brake shoes into the teeth of the gear 14 with sufficient force to lock the wheels and prevent them from turning It will be apparent that the invention may be made of any size desired depending upon the power required toapply the brake to the train, and the brake shoe or brake point will be made of such size as is necessary to prevent undue wear thereon. 7

What I claim is as follows, but various modifications may be made in the construction shown in the drawings and above particularl described form, within the purview of my invention:

1. A brake for railway vehicles comprising the combination with an axle of a notched wheel carriedthereby, a pair of casings on opposite sides of the axle, a brake shoe adapted to engage the notched wheel carried by each casing, springs for holding the brake shoes in a central position, and means to advance both casings and the brake shoes carried thereby toward the notched wheel for engagement therewith to stop the vehicle.

2. brake for railway vehicles comprising the combination with an axis of a notched wheel carried thereby, a pair of brake supporting casings, a brake shoe carried by each casing, spiral sprin for holding each brake shoe in a centre position with respect to the apparatus, and a lever for shifting the brake shoes and casings toward the notched wheel on the axle to bring the brake shoes into contact therewith to sto the vehicle.

3. A bra e for railway vehicles, comprising an axle, wheels carried thereby, a notched brake wheel on the axle, a pair of frames supportin a brake shoe upon each side of said whee means to resiliently support each brake shoe-and to allow it to IIO 10 and adapted to move resiliently in two directions, and means to advance the brake shoes toward the axle wheels carried by the axles to retard the rotation of the axle in either direction.

4. A brake for railway vehicles, compris ing the combination with a car axle of a notched wheel carried thereby, a pair of casings on opposite sides of the axle, a brake shoe resiliently supported by each casing engage the notched Wheel,

to- Wheel so the shoes will and rods upon which said oes are vertically slidable to permit- Ineans to advance both of said casings ward the notched engage the same,

brake sh the brake to be applied to the axle regardless is of the direction of rotation thereof.

In testimony whereof I have hereunto set my hand this 8th day of November A. D.

BARTOLOMEO AMEN DOLA. 

